Temperature dependence of denitrification in phototrophic river biofilms

Boulêtreau, Stéphanie; Salvo, E.; Lyautey, Émilie; Mastrorillo, Sylvain; Garabetian, Frédéric

doi:10.1016/j.scitotenv.2011.11.066

Cited by 66 publications

(38 citation statements)

References 48 publications

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“…Enhanced treatment efficiency was observed in warm season likely due to higher microbial activities at higher temperature (Matamoros et al 2015). Temperature conditions are well known to affect the enzyme activities of microbes and different temperature favors the development of different algae and bacteria species, which will result in functional High-cost to install, complicated to operate, membrane fouling differences of algae-based systems (Boulêtreau et al 2012;Webster et al 2011). Illumination is also important for algae-based systems due to the requirement of photosynthesis for algae growth and the possibility of photodegradation.…”

Section: Removal Of Ppcps In Algae-based Treatment Systemsmentioning

confidence: 99%

Removal of pharmaceuticals and personal care products from wastewater using algae-based technologies: a review

Wang

Liu

et al. 2017

Rev Environ Sci Biotechnol

150

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Pharmaceuticals and personal care products (PPCPs) consist of a variety of compounds extensively used for the treatment of human and animal diseases and for health or cosmetic reasons. PPCPs are considered as emerging environmental contaminants due to their ubiquitous presence in the environment and high environmental risks. In wastewater treatment plants using conventional activated sludge processes, many PPCPs cannot be efficiently removed. Therefore, there is an increasing need for more effective and cost-efficiency ways of removing PPCPs while treating wastewater. Algae-based technologies have recently attracted growing attentions for their potential application in wastewater treatment and hazardous contaminant removal, which are advantages in reducing operation cost while generating valuable products and sequestrating greenhouse gases at the same time. This work reviews the up-to date researches to reveal potential toxic effects of PPCPs on algae and algae-bacteria consortia, identify mechanisms involved in PPCP removal, and assess the fate of PPCPs in algae-based treatment systems. Current researches suggest that algae and algae-bacteria consortia have great potentials in PPCP removal but more works are required before algae-based technologies can be implemented in large scales. Knowledge gaps are identified and further research focuses are proposed in this review.

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Section: Removal Of Ppcps In Algae-based Treatment Systemsmentioning

confidence: 99%

Removal of pharmaceuticals and personal care products from wastewater using algae-based technologies: a review

Wang

Liu

et al. 2017

Rev Environ Sci Biotechnol

150

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“…Recent studies indicate that within freshwater sediments and phototrophic biofilms, warming can strongly increase denitrification rates (Bonnett et al 2013), due to temperature-regulated oxygen concentrations Bouletreau et al 2012). However, in these studies oxygen concentrations were measured in the water column, whereas most denitrification takes place in the sediment.…”

Section: Introductionmentioning

confidence: 99%

“…Warming can affect sediment oxygen demand and oxygen penetration depth in different ways. On one hand, it can lower oxygen concentrations by reducing oxygen solubility and by more strongly enhancing respiration rates relative to photosynthesis (Hancke and Glud 2004;Allen et al 2005;Yvon-Durocher et al 2010;Bouletreau et al 2012). On the other hand, effective diffusion rates of oxygen into the sediment will also increase with rising temperature (Elberling and Damgaard 2001).…”

Section: Introductionmentioning

confidence: 99%

Effect of Temperature on Oxygen Profiles and Denitrification Rates in Freshwater Sediments

et al. 2017

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Vegetated ditches and wetlands are important sites for nutrient removal in agricultural catchments. About half of the influx of inorganic nitrogen can be removed from these ecosystems by denitrification. Previous studies have shown that denitrification in aquatic ecosystems is strongly temperature dependent, resulting from temperature-dependent oxygen availability. Here, we study short-term temperature effects on sediment oxygen demand (SOD) and the maximum depth of oxygen penetration into the sediment (Z), in relation to overall denitrification rates. We set up sixteen wetland microcosms at four different temperatures (11-25°C), in which we determined SOD and Z from sediment oxygen microprofiles. Denitrification rates were measured using 1 5 N-labeling, analysed by membrane inlet mass spectrometry. Temperature strongly affected sediment oxygen dynamics. SOD exponentially rose with temperature, ranging from 0.37 to 1.53 g m −2 d −1 (Q 10 = 2.4).Correspondingly, warming led to shallower oxygen penetration into the sediment, ranging from 4.12 to 2.08 mm. Denitrification rates increased with warming (Q 10 = 2.6), ranging from 8.4 to 86 μmol N m −2 h −1 . The results of this short-term experiment confirm the potential increase of denitrification with rising temperature, promoted by lower oxygen availability in the top layer of the sediment, which supports the understanding of denitrification variability in freshwaters.

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“…Microorganisms in wetlands usually reach their optimal activity at warm temperatures (15-25ºC), especially nitrifying and proteolytic bacteria (Truu et al, 2009). The same trend has been found to occur for denitrifying bacteria (Spieles and Mitsch, 2000;Boulêtreau et al, 2012). The elimination of PPCPs has been found to depend on water temperature, being especially important for biodegradable compounds (e.g.…”

Section: Design and Operational Factors Affecting The Removal Of Pharmentioning

confidence: 80%

Pharmaceuticals and Personal Care Products (PPCPs) in the Environment and Their Removal from Wastewater through Constructed Wetlands

Ávila

García

2015

Persistent Organic Pollutants (POPs): Analytical Techniques, Environmental Fate and Biological Effects

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Temperature dependence of denitrification in phototrophic river biofilms

Cited by 66 publications

References 48 publications

Removal of pharmaceuticals and personal care products from wastewater using algae-based technologies: a review

Removal of pharmaceuticals and personal care products from wastewater using algae-based technologies: a review

Effect of Temperature on Oxygen Profiles and Denitrification Rates in Freshwater Sediments

Pharmaceuticals and Personal Care Products (PPCPs) in the Environment and Their Removal from Wastewater through Constructed Wetlands

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